Keyword Analysis & Research: atomic number for oxygen 8

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What does it mean oxygen has 8 protons?

Oxygen with the symbol O has the atomic number 8 which means it is the 8th element in the table. The number eight also means that oxygen has eight protons in the nucleus . The number of protons and the number of electrons are always the same in an element that is neutral and has no charge. Therefore oxygen has 8 electrons.

Do oxygen atoms always contain 8 neutrons?

It is always less than the sum of the protons, neutrons, and electrons. Since oxygen has 8 protons and 8 neutrons, the atomic mass of oxygen is 16, which is the sum of protons and neutrons. Thus, the correct answer is option (b) 16.

How many atomic numbers does oxygen have?

A single oxygen atom has eight protons, eight neutrons and eight electrons. The number of protons and electrons of an element are equal to its atomic number, which is eight for oxygen. ... The number of neutrons can be calculated by subtracting the number of protons from the atomic mass, which is 16 minus eight for oxygen.An atom is primarily comprised of neutrons, electrons and protons.


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